The First Book

Although that many things entreated of1 in this first book shall seem unto some not
very necessary to the understanding of the second book, yet then contrary do I
ensure2 and certify (as I have sufficiently said in the Prologue)
that the ignorant in the first, shall be full blind in the second; to
the which, the first is as a key, opening and clearing the matters to be intreated of
in the second.